Well, anyone who's watching The Late Show right now probably realizes that David Letterman's not there.

Apparently, Dave showed up to work today but took ill with a stomach problem. It must have been pretty bad, because the only things that have kept Dave off the air in the past were a bad case of the shingles and heart bypass surgery. According to the AP, this is believed to be the first time Dave was not able to go on after showing up for work.

Anyway, tonight's main guest, Adam Sandler, was recruited to fill in, and seems to be doing an OK job of it so far . And he was even able to pull in his Reign Over Me co-star, Don Cheadle, as a guest, so the movie promotion machine didn't skip a beat. Oh, and as a privilege of hosting, Sandler decided to bring his bulldog, Matzoball, up on stage. Awww.....

I find it interesting that during Roger Ebert's absence from Ebert & Roeper, the producers (or maybe Ebert) have decided to use non-critics as substitutes. If you recall, when Gene Siskel was ill (and later, as they were looking for replacements after his death) most of the substitutes were other movie critics. But not now. First we heard that Kevin Smith is going to make an appearance across the aisle from Rich Roeper; now, the next high-profile fill-in wil be none other than Jay Leno, according to TV Week.

The episode will be for next weekend, Aug. 4-5 (movies reviewed will include the new Will Ferrel movie Talladega Nights, Little Miss Sunshine, and Miami Vice). The show will be taped in L.A. instead of Chicago to acommodate Leno's notoriously tight schedule.

So who's the next guest reviewer? My money's on Al Roker.